Security Guard

<firstWeek> Hardware setup </firstWeek>

Building up the smart car

before setup

Installing wheels on board

⬤ Installing motors on 4WD board
⬤ installing wheels on motors
⬤ connect cables to the board

build the head

⬤ set and customize the servo motors on bottom part and top part
⬤ install distance sensor on top part
⬤ install camera on top part
⬤ join the two parts (bottom and top)
⬤ install the head part on 4WD board
⬤ connect cables to the board

install raspberry pi 4 on board

⬤ set the standoffs
⬤ installing wheels on motors
⬤ content cables on board

install the line tracker sensor

⬤ install standoffs 10 on board
⬤ set line tracker on standoffs
⬤ content cables on board

connect all wires on board and pi

⬤ connect pi camera on pi port
⬤ connect distance sensor on board
⬤ content servo motors connectors on board
⬤ content batteries on board

after setup

<secondWeek> setup the raspberry pi </secondWeek>

install libraries and enable features on raspberry pi
to be compatible for smart car components

install operating system on the pi

⬤ install OS raspbian 32
¶ using raspberry pi Imager v1.7
⬤ update and upgrade apt packages
⬤ enable ssh, camera, I2C, Remote GPIO, and VNC connections

⬤ ⬤ ⬤


                                #Run the following command   

                                # 1 to make sure that the system is uptodate   

                                 raspberry@Host:~$ sudo apt-get update   &&   sudo apt-get upgrade    

                                # 2 to enable interface features on pi 

                                 raspberry@Host:~$ sudo raspi-config

Install python

⬤ Installing python 3
⬤ installing Freenove_RPI_WS281x_Python library
⬤ installing python3-dev library
⬤ installing python3-pyqt5 library

⬤ ⬤ ⬤


                                #Run the following command   

                                # 1 install python   

                                 raspberry@Host:~$ 
                                sudo apt-get install python python3
                                    
                                        
                                    
                                 
                                

                                # 2 install dependencies 

                                 raspberry@Host:~$ 
                                sudo apt-get install -y python3-dev python3-pyqt5
                                    
                                        
                                    
                                 

                                # 3 clone python library from freenove for 4wd Smart car  

                                 raspberry@Host:~$ 
                                git clone https://github.com/Freenove/Freenove_RPI_WS281x_Python.git

install PyAudio for voice recognition

⬤ $ install libportaudio0 libportaudio2 libportaudiocpp0 portaudio19-dev flac libraries
⬤ $ create virtual environment
⬤ $ activate the virtual environment
⬤ $ install pyaudio requests websockets using pip

⬤ ⬤ ⬤


                    #Run the following command   

                    # 1 to install libraries   

                     raspberry@Host:~$
                        sudo apt-get install libportaudio0 libportaudio2
                            libportaudiocpp0 portaudio19-dev flac 
                            
                                
                            
                        
                    # 2 create virtual environment   

                     raspberry@Host:~$
                        python3 -m venv venv 
                            
                                
                            
                        
                        

                    # 3 activate virtual environment   

                     raspberry@Host:~$
                        . venv/bin/activate 
                            
                                
                            
                        
                        

                    # 4 install dependencies inside the virtual environment   

                     raspberry@Host:~$
                         pip install pyaudio requests websockets

setup pushing email notifications system

⬤ $ install ssmtp mailutils
⬤ $ create a gmail account for the smart car
⬤ $ create app password to allow python login and send mails
⬤ $ create a python script to send email from the smart car

⬤ ⬤ ⬤


                                         # import dependencies   

                                         import   smtplib 

                                         import   os 

                                         from   email.message  import  EmailMessage  

                                         from   datetime  import  datetime  

                                        

                                         # get current date and time  

                                        currentTime  = datetime.now().strftime("%H:%M:%S") 

                                        

                                         # declare credentials for login   

                                        Email  = os.environ.get('ADMIN_EMAIL') 

                                        Password  = os.environ.get('ADMIN_PASSWORD') 

                                        

                                         #  send message to    

                                        Receiver = "godsaveme2001@gmail.com"  

                                        

                                         # setup the server connection   

                                        mailServer = smtplib.SMTP_SSL('smtp.gmail.com', 465) 

                                        

                                         # Message  

                                        messageToSend = EmailMessage() 

                                        

                                        messageToSend['Subject'] = 'evening summary'  

                                        messageToSend['From'] = Email 

                                        messageToSend['TO'] = Receiver 

                                        messageToSend.set_content(f"This is your evening summary from smart car \n at {currentTime}all looks good!") 

                                        

                                         # check if login is successful if not print a message  

                                         try: 
                                             mailServer.login(Email,  Password) 

                                            except NameError as loginError: 

                                              print(f"an error occur while trying to login please check the credentials \n [{loginError}]") 

                                         # send email and if an error occurs print a message   

                                         try:  

                                             mailServer.send_message(messageToSend) 

                                            except NameError as  sendMessageError: 

                                             print(f"An exception occurred \n {sendMessageError}") 

                                        

                                        print("mail has been sent successfully!") 

                                        

                                         # close connection  

                                        mailServer.quit()